Munster's primary area of concern will be among the forwards for this weekend’s Heineken Champions Cup opener with Wasps that has been thrown into chaos by positive Covid-19 tests.

Munster were one of four teams in the United Rugby Championship that were due to play in South Africa for the last two weekends before the imposition of fresh travel restrictions saw the fixtures postponed.

Munster returned to Ireland on Wednesday without 14 players and staff who had returned positive tests and it means their preparation for Sunday’s trip to Coventry have been thrown into disarray with three distinct groups of players; one still in South Africa, another that is in quarantine in Ireland until midnight the night before the European encounter plus the international contingent that never travelled to South Africa.

Speaking on RTÉ’s Against the Head, Donal Lenihan said Munster first of all needed to weight up whether to concede the game and accept a 28-0 defeat, and having decided to fulfill the fixture, what players to utilise given the lack of training for such a sizeable number of the squad.

Munster will have former Leinster prop Roman Salanoa to call upon after recovering from a knee injury, but it’s looking threadbare in the pack for the challenge of Wasps.

"At the moment the challenge is getting cover in the front row," he told viewers. "We know that in the original touring party, six props and four hookers went to South Africa.

"We’re not sure who is in South Africa and who is at home, but outside of that, the only frontline forwards they have at the moment are Dave Kilcoyne, Tadhg Beirne and Peter O’Mahony, whereas they are well sticked in the backs.

"Do they risk bringing the guys who came back early? (those in quarantine until midnight on Saturday)

"There is a risk either way," Bernard Jackman added.